Adiantum aleuticum (Rupr.) Paris
northern maiden-hair (Aleutian maidenhair)
Pteridaceae (Maidenhair Fern family)
Introduction to Vascular Plants
northern maiden-hair (Aleutian maidenhair)
Pteridaceae (Maidenhair Fern family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Species Information
General:
Deciduous perennial, palmately branched, from a stout, scaly rhizome, 15-75 cm tall.
Leaves:
Broadly fan-shaped, 10-75 cm long; stalks reddish-brown to purplish-black; blades more or less palmately-pinnate, set at right angles to the stalks and more or less parallel to the ground, 10-40 cm long, 10-40 cm wide, rounded to kidney-shaped, forked at the bases into 2 recurved-spreading divisions which in turn bear 2-several shorter divisions, the larger divisions with 15-35, alternate, short-stalked
Notes:
Small plants with small fronds (5 to 15 cm across) and strongly overlapping ultimate segments were described as A. pedatum L. var. subpumilum Wagner. They clearly belong to this species, but no formal nomenclatural transfer has been done yet. This variety is rare on coastal bluffs from northern Vancouver Island south to the Olympic Peninsula, WA.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Adiantum aleuticum
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
270 | 0 | 2100 |
| Slope
Gradient (%) |
26 | 0 | 150 |
|
Aspect (degrees) |
293 | 5 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 0 | 7 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
446 | ||
| Modal
BEC Zone Class |
CWH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CDF(3), CWH(394), ESSF(1), ICH(27), IDF(5), MH(4), SBS(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist forests, rocks, scree, cliffs, banks and waterfall spray zones in the lowland and montane zones; frequent throughout BC, mostly S of 55°N, infrequent in SC BC; amphiberingian, N to AK, E to SW AB and S to CO, AZ and CA; disjunct E to PQ and NF and S to PA, WV and MI; E Asia.Synonyms
Synonyms and Alternate Names:
Adiantum pedatum subsp. aleuticum (Rupr.) Calder & Roy L. Taylor
Adiantum pedatum subsp. calderi Cody
Adiantum pedatum subsp. subpumilum (W.H. Wagner) Lellinger
Adiantum pedatum var. aleuticum Rupr.
Adiantum pedatum var. subpumilum W.H. Wagner